Portion of a display panel with a graphical user interface



The FIGURE is a front view of a portion of a display panel with a graphical user interface showing features of my new design.

The broken lines including the showing of a portion of a display panel of a communications terminal surrounding the illustrated graphical user interface and the portions of the graphical user interface are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a portion of a display panel with a graphical user interface, as shown and described. 